Manufacture of effect papers and apparatus therefor



Oct. 4, 1932. B. CORNELY ET AL MANUFACTURE OF EFFECT PAPERS AND APPARATUS THEREFOR Filed Oct. 25, 1929 3 Sheets-Sheet BeriHod Cornel Rudolf Rlch rer INVENTORS ATTORNEYS.

Oct. 4, 1932. B. CORNELY ET AL MANUFACTURE OF EFFECT PAPERS AND APPARATUS THEREFOR Filed Oct. 25, 1929 3 Sheets-Sheet Berrhold Cornelq Rudoh Rlchrer INVENTOR5 ATTORNEYS 1932- B. CORNELY ET AL 1,830,827

MANUFACTURE OF EFFECT PAPERS AND APPARATUS THEREFOR Filed Oct. 25-, 1929 5 Sheets-Sheet 3 BerHwold comely Rudolf Rlchter INVENTORS BY ATTORNEYS Patented Oct. 4, 1932 UNITED STATES PATENT OFFICE BERTHOLD CORNELY, OF MANNHEIM, AND RUDOLF RICHTER, 01E LUDWIGSHAFEN- ON-THE-RHINE, GERMANY, ASSIGNORS TO I. G. FARBENIN'DUSTRIE AKTIENG-E- SELLSCHAFT, 0F FRrANKFORT-oN TflE-mAIN, GERMANY MANUFACTURE OF EFFECT PAPERS AND APPARATUS THEREFOR Application filed October 25, 1929, Serial No. 402,462, and. in Germany October 26, 1928.

The present invention relates to the manufacture of effect papers and apparatus there-- for.

We have found that effect papers, such as for example ornamental paper having particularly beautiful and original effects, security paper and the like, are obtained by supplying the substances which are to be incorporated with the paper pulp, such as suspensions or solutions of coloring materials, loading material and the like, suspensions of colored, colorless or prepared paper materials, fibres and the like, to the paper pulp at a place in the paper machine at which no matting of the pulp has yet taken place, that is to say on the wire table, by means of one or more feed pipes which at the same time serve as thorough mixers for the paper pulp, the mouthpieces of which are preferably bent to form a small angle with the support of the pulp or to be parallel therewith. The feed pipes are advantageously provided with projecting surfaces assisting the mixing and the expression feed pipe when used in the fol lowing description andthe appended claims is meant to comprise also the combination of the said pipes with the projecting surfaces. The feed pipes are arranged at a distance above the support of the pulp which is smaller than the distance of the upper level of the paper pulp, so that'the feed pipes terminate either within the pulp or at least the said projecting surfaces dip into the pulp, a to and fro motion in a direction at an angle, preferably a right angle to the flow of the pulp being imparted to the feed pipes or to the paper mass or to both if desired. The feed pipes may be of diflerent length, so that they dip more or less deeply into the pulp and the mouthpieces of the feed pipes may be arranged opposite, parallel or vat an angle to each other.

The process according to the present invention may be carried out for example as follows The feed pipe, the mouthpiece of which is preferably bent to form a small angle with the support of the pulp or to be parallel therewith, is connected to a reservoir for the solutions or suspensions of coloring materials or tional views at a right angle to the the like by a funnel or directly by a flexible pipe and dips into the thin pulp which has not yet matted, for example on the wire table, and is set in horizontal motion by a suit- The nature of the invention will be further described with reference to the accompanying drawings which shew an arrangement of apparatus according to this invention but the invention is not restricted to this arrangement. Figure 1 is a vertical section of the feeding and mixing device at a right angle to the flow of the pulp, Figure 2 being a plane view thereof. Figure 3 is a vertical section in the direction of flow of the pulp of a single feed pipe with a projecting surface thereon. Figure 4 is a horizontal section of two feed pipes showing the arrangement of the stationary separating surfaces. Figures 5a, 6a and 7av show the position of single feed pipes at different levels in vertical section, Figures 56, 6b and 76 being the corresponding secaforesaid sectional views.

Figure 1 is an elevation of the apparatus comprising three, angular feed pipes at which are mounted on a bar Or the equivalent 8 and Figure 2 is a plan of the same the dotted lines h shewing some possible positions of the feed pipes a. The said bar 8 is capable the wire table, at least one feed pipe arranged at a distance from the support of the pulp, which distance is smaller than the height of the pulp means for supplyin a liquid to said feed pipe and means for Establishing a relative motion of said feed pipefland the paper pulp against each other'in a direction at an angle to the flow ofthe pulp.

2. In a paper machine in combination with the Wire table, at least one feed pipe arranged at a distance from the support of the pulp, whichdistanceis smaller than the height of the (pulp, means for supplying a liquid to'said fee pipe and means for establishing a relative motionzof said feed pipe and the paper pulp against each other in a direction substalntially at a right angle to the flow of the Pu 3. In a papermachine in combination with the wire table, at least one feed pipe the mouthpiece of which forms a small angle with the support of the pulp and is arranged at a distance therefrom which is smaller than theheightof thepulp, means for supplying a liquid'toflsaid feed pipe and means for est'ablishing a relative motion of said feed pipe and the paper pulp against each other in a direction substantially at a right angle to the which is smaller than the height of the pulp,

means for supplying a liquid to said feed pipes, a rod connected to the said feed pipes and means for imparting to the said rod and feed pipes a to and fro motion in a direction substantially at a right angle to the flow of the pulp.

5. In a paper machine in combination wlth the wire table, a series of feed pipes the mouthpieces of which form a small angle with the support of the pulp and are adjustable in their positions to each other, the said mouthpieces being arranged at a distance from the support of the pulp whichis smaller than the height of the pulp, means for supplying a liquid .to said feed pipes, a rod connected to the said feed pipes and means for imparting to the said rod and feed pipes a to and fro motion in a direction substantially at a rightangle to the flow of the pulp.

-6. In a pa er machine in combination with the wire ta le, a series of feed pipes the 10f a paper machine, a device for applying color effects to a web formed on said wire from fibrous stock, comprising a pipe for feeding liquid color to said stock located above and along said wire ahead of the point Where said web begins to form, the lower end of said pipe projecting in the direction of travel of said wire and being submerged in the stock on said wire and means for reciprocating said pipe transversely of said wire while color is being fed therethrough.

8. In combination with the forming wire of a paper machine, adevice for applying color effects to aweb formed on said wire from fibrous stock comprising a plurality of vertical pipes for feeding liquid color to said stock located above and along said wire ahead of the point where said web begins to form, the lower end of each pipe having an offset portion projecting in the direction of travel of said wire and being submerged in the stock on said wire and means for reciprocating said pipes transversely of said wire while color is being fed therethrough.

9. A device as recited in claim 8, wherein the oflset portion of each pipe is submerged to a different level in said stock.

10. In combination with the forming wire of a paper machine, a device for applying color effects to a web formed on said wire from fibrous stock comprising a pipe for feeding liquid color to said stock located above and along said-wire ahead of the point where said web begins to form, the lower end of said pipe having an offset portion projecting in the direction of travel of said wire and being submerged in the stock on said wire, means for reciprocating said pipe transversely of said wire while color is being fed therethrough, and rigid means on said ofi'set portion for causing thorough agitation of said stock.

11. In combination with the forming wire of a paper machine, a device for applying color effects to a web formed on said wire from fibrous stock comprising a pipe for feeding liquid color to said stock located above and along said wire ahead of the point where said web begins to form, the lower end of said pipe having an offset portion projecting in for reciprocating said pipe transversely of said wire whilecolor is being fed therethrough, rigid means on said .oflset portion for causing thorough agitation of-said stock, and means surrounding said oifset portion to limit the field of application of said color.

12. A process for applying color elfects to a paper web during its formation on a forming wire of a paper machine which comprises injecting color into the flow of stock below the surface thereof while the stock is on the forming wire, but before it is subjected to suction and giving to the color while being injected a thrust in a direction transverse to the flow of stock.

13. A. process for applying color effects to a paper web during its formation on a forming wire of a paper machine which comprises injecting color intp'the flow of stock ,at various elevations below the surface thereof and agitating the stock transversely of its direction of flow and within the field of application of the color during injection of the color.

14. A process for applying color efl'ects to a paper web during its formation on a forming wire of a paper machine which com prises injecting color into the flow of stock at various elevations below the surface thereof, agitating the stock transversely of its direction of fiow and within the field of application of the color during injection of the color, and simultaneously limiting the field of application of said color.

15. In a paper machine in combination with the wire table, at least one feed pipe arranged at a distance from the support of the pulp,

\ which distance is smaller than therheight of the pulp, and a point along said support ahead of that at which the pulp begins to form into a web, means for supplying a liquid to said feed pipe and means for establishing a relative motion of said feed pipe and the paper Pulp against each other in a direction at an angle to the flow of the pulp. a

16. In a paper machine in combination with the wire table, at least one feed pipe arranged at a distance from the support .of the pulp,

\ which distance is-smaller than the height of the pulp, and a point along said support ahead of that at which the pulp begins to form into .1 web, means for supplying aliquid to said feed pipe and means for establishing'a relative motion of said feed pipe and the paper pulp against each other in a direction substalntially at a right angle to the flow of the pn p.

17. Ina paper machine in combination with the wire table, at least one feed pipe the mouthpiece of which forms a small angle withthe support of the pulp and is arranged at a distance therefrom which is smaller than the height of the pulp, and a point along said support ahead ofthat at which the pulp begins to form into a web, means for supplying a liquid to said feed pipe and means for establishing a relative motion of said feed pipe I and the'paper pulp against each other in a direction substantially at a right angle to the flow of the pulp.

18. In a paper machine in combinationwith the wire table, a series of feed. pipes the mouthpieces of which form a small angle with the support of the pulp and are arranged at a distance from the support of the pulp which is smaller than the height of the pulp, and a point along said support ahead of that atwhich the pulp begins to form into a web, means for supplying a liquid to said feed pipes, a rod connected to the said feed pipes and means for imparting to the said rod and port ahead of that at which the pulp begins to form into a web, means for supplying a liquid to said feed pipes, a rod connected to the said feed pipes and means for imparting to the said rod and feed pipes a to and fro motion in a direction substantially at a right angle to the flow of the pulp.

20. In a paper machinein combinationwith the wire table, a series of feed pipes the mouthpieces of which form a small angle with the support of the pulp and are arranged at a distance therefrom which is smaller than the height of the pulp, and a point along said support ahead of that at which the pulp begins to form into a web, means for supplying a liquid to said feed pipes, a rod connected to the said feed pipes and means for imparting to the said rod and feed pipes a to and fro motion in a direction substantially at a right angle to the flow of the pulp and stationary separating surfaces arranged on both sides 'of said feed pipes. z y

In testimony whereof we have hereunto set our hands.

' BERTI-IOLD GORNELY. RUDOLF RICHTER. 

